Improvement in horse-powers



P. K. DEDERIGK. Horse-Power.

No. 2I5,2I3. Patented May 13, 1879.

N.PETERS, PNOTO-LII'HDGRAPHER. WASHINGYQN, D c.

UNITED STATES PATENT OFFICE.

PETER K. DEDERIOK, OF ALBANY, NEW YORK.

IMPROVEMENT IN HORSE-POWERS.

Specification forming part of Letters Patent No. 215,213, dated May 13,1879; application filed April 1, 1879.

To all whom it may concern:

Be it known that I, PETER K. DEDERIOK, of Albany, county of Albany,State of New York, have invented certain Improvements in Horse-Powers,of which the following is a specification. 1

My invention relates to that class of powers known as tread or railwaypowers and consists in the form and construction of the link and mannerof attaching the same to the lag.

Figures 1 and 2represent side views of lags, showing different ways inwhich the improved link may be attached. Fig. 3 is an end View of thelag as represented in Fig. 2. Fig. 4 is a view of the link detached; andFig. 5 is a view of a modified form of link, and mode of securing thesame.

Similar letters of reference in the several figures denote the sameparts. i

A represents the lag or plank; B, the link;

0, the holes for the rods that connect other links so as to form anendless chain. D represents a projection on the link. E E are bolts. Fis a dead-nut.

The lag A is of the ordinary form, except having a slot or mortiselengthwise of the lag under the link, as shown from the end view, Fig.3.

The links are formed by bending a piece of wrought-iron so as to fitover a wood center,

as shown. One end of the wrought-iron is bent up, as at D, thus making aprojection or lug which fits the slot or mortise in the lag, as seen atD, Fig. 3, and the link is then secured to the lag by the bolts E E,screwed in the dead-nut F, or in any other suitable manner.

It is well known that these railway or tread powers are always used withone end elevated, and in ordinary powers the weight of the horsesoccasions a good deal of strain on the bolts holding the link to thelags, especially so when the traces of the horses are secured so as tomake them draw, in addition to their weight, and the bolts crush thewood and bend, so that the lag becomes loose, and the power works bad.

Now, with my improved link, the lug D projecting into the lag forms abroad and strong bearing, that prevents the wood from crushing orbending the bolts-in fact, relieves the bolts entirely, except to holdthe link up to the lag. This always keeps the chain perfectly firm andtrue, and, in consequence, it works with more power.

Both ends of the links might be turned up so as to form one strong lug,or to form two separate lugs, if desired, and such construction wouldgive additional strength; or a similar lug might be formed on the linkor secured to it without bending the end, which would operate in thesame manner and be of greater strength; but I have found that turning upa single end is sufficient for ordinary powers.

The lug might be separate, and secured to the lag or link by beingmortised into it, as shown in Fig. 5, H being the lug, and the ends ofthe iron link be brought to bear against it with the same effect; butthis would require more exactness in construction.

Having thus fully described my invention, I claim and desire to secureby Letters Patent 1. The combination of the lag A, link B, and lug D, orequivalent, for the purpose set forth.

2. The link B, formed with one or more lugs,-

